fix(package): update @feathersjs/express to version 4.4.1

Closes #99

Author: greenkeeper[bot]

package.json

@@ -31,7 +31,7 @@
     "@feathersjs/authentication-local": "^1.2.3",
     "@feathersjs/client": "^3.6.0",
     "@feathersjs/errors": "^3.3.2",
-    "@feathersjs/express": "^1.2.5",
+    "@feathersjs/express": "^4.4.1",
     "@feathersjs/feathers": "^3.2.1",
     "@feathersjs/socketio": "^3.2.4",
     "@feathersjs/socketio-client": "^1.1.2",